There is one side block on each side of the platform. The
slide blocks must be in good condition and free to move
without obstruction.
Fasteners
Visually inspect all fasteners to see that none are miss-
ing or loose.
Pay particular attention to all of the bolts, nuts, roll pins,
collars, and snap rings that connect the scissors arms.
They should all be present, tight, and not damaged in
any way.
Upper Control Station
Inspect the platform and upper controls only if all func-
tions operated properly from the lower controls.
Guardrail System
The guardrail system (refer to Figure 8.19) includes the
top rail, mid rail, toeboards and an entry chain or op-
tional swinging gate.
Figure 8.19—Guardrail System
Inspect all components of the guardrail system. The
rails and toeboards must all be in place and free of any
damage or deformation. Visually check the rail and
toeboard welds for cracks. All bolts and nuts fastening
the guardrails in place must be present and not show
any signs of looseness.
Inspect the entry chain to be sure it is present and se-
curely fastened to the rail. The chain must be free of
damage and deformation that may prevent if from func-
tioning properly. Inspect the hook and eye that secures
the chain to the rail.
Inspect the optional swinging gate to see that it swings
freely, closes firmly, and is not deformed in any way.
Make sure the gate is secure when it’s closed.
Platform Extension
A snapper pin at the right front of the platform secures
the extension deck to the main platform deck. Inspect
the pin (refer to Figure 8.20) to ensure that it properly
secures the extension deck. Release the pin to extend
the platform. Extend the platform while checking for
proper operation.
Figure 8.20—Platform Extension Snapper Pin
Extend the platform and inspect the weldments for de-
formation and damage. Visually check the platform
welds for cracks.
Operating Controls
With the aerial platform stowed, test the operation of
each control from the upper control station (refer to Fig-
ure 8.21).
Figure 8.21—Upper Controls
Place the battery disconnect switch in the on position
and from the lower controls, place the control selector in
the up position and turn the key switch on if the machine
is equipped with that option. Pull the emergency stop
button out to turn on the electrical power to the upper
controls.
From the upper controls, test the interlock by moving the
joystick without engaging the interlock switch. If move-
ment occurs the interlock is not functioning properly. Do
not operate the machine until the problem is corrected.
S1930 – 0361266
8 - 7
Chapter 8. Prestart Inspection
Snapper Pin
Top Rail
Mid Rail
Toeboard
Entry Chain
Emergency
Stop Button
Interlock Switch
Steer Switch
Joystick
Drive/Lift
Selector
Switch
Horn
